Bugfix: Task 1st tier breaks into two lines

1. replaced edit/due on text with icons
2. made title and object fields smaller (span2 instead of span3)
3. removed some unnecessary padding.
Whitespace fixes in mustache_helper.js
Merge pull request #1572 from reciprocity/feature/workflow-task-1st-tier-cleanup

Bugfix: Task 1st tier breaks into two lines